zip 파일 압축풀기 - php

// 파일명
$zip = zip_open("aa.zip");

while( $entry = zip_read($zip) )
{
    echo "Name: " . zip_entry_name($entry) . "
";
    echo "Actual Filesize: " . zip_entry_filesize($entry) . "
";
    echo "Compressed Size: " . zip_entry_compressedsize($entry) . "
";
    echo "Compressed Method:" . zip_entry_compressionmethod($entry) . "

";

    if(zip_entry_compressionmethod($entry)=="stored" && zip_entry_filesize($entry)==0)
    {
        mkdir(zip_entry_name($entry), 0744);
        continue;
    }

    if(zip_entry_open($zip, $entry))
    {
        $zer = zip_entry_read($entry);
        $fp = fopen(zip_entry_name($entry), "w");
        fwrite($fp, $zer);
        fclose($fp);
        zip_entry_close($entry);
    }
}
zip_close($zip);